Online Slots
Online slots are the most numerous category of gambling games that can be found in any reputable casino. Even by rough estimates, their total number has long surpassed 10,000. Each slot machine offers the player engaging gameplay, including a variety of features, themes, designs, betting ranges, technical specifications, and much more. Among all the gaming variety, one can find online slots that are very similar to each other, as well as those that have nothing in common. On this page, we will tell you in detail about all the features of slot machines, as well as advise what to pay attention to when choosing a game.
Top 5 casinos with a wide selection of online slots
Bonus Details
Min. Deposit – $20
Bonus Size – 100%
Max Payout – No Limit
Sticky – Yes
Free Spins – Up to 500
Wager – 40x bonus within 7 days. Max bet $5
Does not accept players from
United States
- Awesome bonuses for players
- Weekly cashback 10%
- Convenient for playing from a cell phone
- High payment limits
- Birthday gifts of up to $750
- Payout speed up to 24 hours
- Curaçao License
Bonus details
Deposit – $10 – $500
Quantity – 100%
Max Payout – No Limit
Sticky – No
Free Spins – 90
Wagering – 40x bonus within 7 days
Accepted players from
United States
- Casino with an impeccable reputation
- Convenient site adapted for mobile devices
- A great selection of games from the world's leading providers
- Original and generous bonus system
- Numerous promotions, lotteries, and tournaments
- An extensive list of prohibited countries
- The welcome package consists of one bonus
Bonus Details
Min. Deposit – $10
Bonus Size – 100%
Max Payout – x5 of the bonus
Sticky – Yes
Free Spins – 20 FS
Wager – 40x on bonus
Accepted players from
United States
- Pleasant website design
- Generous bonuses on the first three deposits
- Cashback without wagering
- No-deposit bonus for all new players
- Active Curacao license
- Convenient mobile version of the site
- Territorial restrictions
- Daily payout limits
- Mandatory verification
Bonus Details
Min. Deposit – $1
Bonus Size – 100%
Max Payout – No Limit
Sticky – Yes
Free Spins – No
Wager – 35x on bonus.
Accepted players from
United States
- No mandatory verification
- Huge game selection
- Generous first deposit bonus
- Regular tournaments
- Limited selection of bonus offers
- Withdrawal time may exceed 24 hours
Bonus Details
Min. Deposit – €10
Bonus Size – 100%
Max Payout – x1 of the bonus
Sticky – Yes
Free Spins – 30 FS
Wager – 35x on bonus
Accepted players from
United States
- A vast selection of games
- Generous bonuses on first and subsequent deposits
- Exclusive registration bonus
- No withdrawal limits
- Wager-free cashback
- Separate app for Android
- Support for multiple cryptocurrencies
- Conditionally mandatory verification
- Territorial restrictions
- Modest loyalty program
We recommend playing only in the most reliable casinos. Only in them can you be sure that the presented online slots are licensed and fair! The top 5 licensed casinos are presented above.
What are online slots and how it works
Online slots, or slot machines, are the most common gambling game. Their operation is based on the player placing bets and then determining the outcome of the gaming round. If in some table games, such as blackjack, the player’s actions can affect the outcome, then with slots, the result is entirely random!
Wins or losses are determined differently, depending on the game mechanics. If we consider classic slot machines with paylines, the player is awarded a prize if a combination of identical symbols is found on an active line. As the variety of games increases every day, many developers resort to entirely different game mechanics, including payout principles. Besides, many online slots feature special modes – bonus games. Typically, it is in these that the player’s chance of a large, or even maximum, win significantly increases!
How do slot machines work?
Since online slots are a casino game, they are meant to generate profit. Behind the apparent absolute randomness of game outcomes lies the mathematics of large numbers. Let’s take a closer look.
In short – the more you play, the more you lose.
Each slot has a return to player percentage – RTP (Return To Player). This characteristic shows the ratio of all players’ bets to the wins. Let’s give a simple example: if you play a game with an RTP of 95%, then in the long run, only 95% of all your bets will be returned as winnings. The remaining 5% will become the casino’s profit.
It is important to note why we mentioned the long distance. The reason lies in the calculation of RTP, not within a single gaming session, but over tens of millions of gaming rounds. Moreover, developers apply this indicator to all users at once, not just to a specific player. Consequently, the actual RTP values can vary significantly, even for individual players. However, as more gaming rounds take place, the real RTP value approaches the manufacturer’s stated figure.
How to identify licensed slots
Our discussion about RTP was not in vain. It’s because only licensed slots guarantee the characteristics that developers declare. When you play authentic slot machines, the game distributes prizes randomly, just as the math intends, and over the long haul, the casino earns a specific percentage – no more, no less. Meanwhile, numerous unlicensed projects flood the internet, aiming to deceive their users by offering counterfeit online slots.
Playing on such sites is dangerous for several reasons. First and foremost, if you play in an unlicensed casino, there’s no guarantee you’re not being cheated. These projects may host slots with significantly lower RTP rates, such as 80% instead of the nominal 95%. It’s impossible for an average player to detect this, and if they lodge complaints, the administration of these counterfeit casinos may simply attribute it to bad luck. Furthermore, by playing in an unlicensed casino, you’re not only risking the money in your account but also your personal data. Since such a project is not regulated by supervisory authorities and does not report to anyone, it could easily block you for contrived reasons.
To avoid falling prey to fraudsters, you need to follow two simple rules. Thanks to them, you will always be sure that you are playing only in licensed slots:
Choose only reliable casinos with a valid license
You can check its presence yourself by clicking on the corresponding logo at the bottom of the site. After that, you will be taken to a validator site, which displays all information about the issued document.
Always check the gaming server’s address
Do this by comparing the page’s URL with the official addresses of gaming providers.
You can find a list of servers of certified providers, as well as more information about licensed and counterfeit slot machines on this page.
Technical specifications of slot machines
All online slots have a set of various parameters that affect the gameplay and winnings. Below, we briefly review the main ones, and you can learn about each characteristic by clicking on the corresponding link.
Winning frequency
The winning frequency (Hit Frequency, HF) is a value embedded by the game developer that shows how often you will receive prizes. For example, if you are playing an online slot with an HF of 10%, then over a huge gaming distance, every tenth spin will bring a payout. At the same time, the other 9 spins will be empty. Of course, within a single gaming session, the frequency of wins can significantly vary.
Volatility
Volatility (Variance) is a special slot parameter that directly depends on the frequency of wins. Continuing with the example described above: if in a slot you win much more often than the stated value, then such a game has a low level of volatility. Conversely, if you win very rarely, then the slot is considered highly volatile. The lower the volatility, the lower the average win amount and the higher its frequency. At the same time, the higher the volatility, the less frequently you will win, but the prize size can be very large.
RTP
The Return to Player (RTP) percentage is a metric that shows the percentage of all player bets returned as winnings. This parameter is theoretical, which is why gaming results can significantly vary from one player to another over a short distance. Typically, online slots have an RTP around 95%, with some variation higher or lower. The higher the RTP, the more advantageous the game is in the long term.
Betting Range
The betting range is the variability of possible bet values placed at the beginning of each game round. This makes gambling games accessible to all player categories. If you prefer not to take risks, there are slots with minimal bets available for you. Conversely, those who like to play big can place huge bets, up to several thousand dollars per spin.
Maximum Multipliers
Maximum multipliers are what every gambling enthusiast desires. Occasionally, albeit extremely rarely, players manage to catch a winning combination that brings a huge prize relative to the bet placed. In fair slots, the likelihood of such a win does not depend on the current bet size or any other variables.
Jackpots
Jackpots are a special mechanic of slot machines that allow winning incredibly large amounts, often exceeding the maximum possible multiplications. Jackpots come in several types: fixed and progressive, as well as local and global. Typically, they are paid out completely at random, regardless of any gaming conditions.
What are demo online slots
If you want to get a closer look at what online slots are but don’t know where to start, we recommend trying the demo mode of the game. The vast majority of slot machines offer this mode, and it can be used directly on the casino site, including without registration. By starting this mode, you will get a complete understanding of the game for free and without any risk.
In demo mode, you play the game with conditional money that has no real value. Designers have made this type of game specifically to help players familiarize themselves with the main mechanics and rules of the slot machine. Typically, they fully correspond to the real versions of the slots. The same rule applies to technical specifications, including volatility, winning frequency, RTP, maximum multiplications, and much more.
In the corresponding section of our website, you will discover detailed reviews of the most popular online slots. Each review offers a thorough description of the mechanics and characteristics, and it allows you to initiate a free demo mode to familiarize yourself with the game. Furthermore, if the slot appeals to you, you can effortlessly register at the recommended reliable casino, make a deposit, and begin playing for real money!
Best online slot providers
After you test the slot in demo mode and read its review, we suggest you move on to playing for real money. Understandably, a newcomer might get lost in the vast array of games, since reliable casinos often offer more than 5,000 games from various providers. To help you make a choice, we offer an introduction to the most engaging and interesting online slots from the 5 most popular manufacturers.
Pragmatic Play
According to many authoritative gaming publications, Pragmatic Play’s products are the most in demand among gambling enthusiasts. In addition to slot machines of every imaginable type and color, the provider offers a set of live dealer games – Pragmatic Play Live. Games from this company are practically available in all casinos, meaning you will have no trouble finding them.
Among the most interesting games from Pragmatic Play, we highlight titles such as Fruit Party, Sweet Bonanza, Gates of Olympus, and Sky Bounty. You can learn about the provider’s history and its features on this page.
Nolimit City
A company that releases online slots of all kinds of themes. A key feature of its products is the countless number of mechanics and functions that significantly change the usual gameplay. In addition to various purchasable bonuses, all games offer patented Nolimit City developments – xWays, xSplit, instant spin mode, and much more.
We recommend trying out slots like Mental, Possessed, Tombstone R.I.P, and San Quentin. Find more interesting games and their features on this page.
Relax Gaming
A provider known for its large selection of slots. They dedicate themselves to various themes and also offer a huge variety of functions: both gameplay and purchasable. At the same time, many online slots from Relax Gaming offer fabulous prizes, up to 100,000 bets! Among the developed games are unique products, for example, Book of 99, which has an RTP of 99%!
We consider the most engaging slots from this provider to be Money Train 4, Iron Bank, Beast Mode, Dead Man’s Trail, and Snake Arena. Find more useful and interesting information about the provider on this page.
Hacksaw Gaming
A provider known for its unusual gaming mechanics. A key feature of its products is the presence of variable purchasable bonuses. Moreover, these games have spawned a new gaming style adopted by many players and streamers – they exclusively use purchasable features. It’s worth noting that the vast majority of games have high volatility and large maximum multipliers – x10000 and above.
In our view, the most interesting games from Hacksaw Gaming are Chaos Crew 2, Le Bandit, Benny The Beer, Dork Unit, and Itero. Read more about the provider and its products here.
Push Gaming
One of the first companies to start widely using purchasable features in their games. Moreover, many of them allow for huge wins with the right luck – from x50000 and above! Unfortunately, some countries currently do not have access to the provider, but you can easily solve this problem with a VPN. Remember, some casinos may prohibit this.
We recommend checking out the following online slots from Push Gaming: Razor Returns, Retro Tapes, Big Bamboo, Mystery Museum, Dinopolis. Find more interesting games and company features here.
Conclusion
Online slots are the most popular, and at the same time, the most engaging and diverse type of gambling games. Each slot machine has a unique set of technical characteristics and parameters that offer genuine enjoyment from the gameplay. Various themes and designs, wide betting ranges, fixed and progressive jackpots, numerous mechanics and features – all these are about online slots. Regardless of your preferences, in any reputable casino, you can easily find a slot machine to your liking!
Frequently Asked Questions
Online slots are a type of gambling game where the outcome is entirely dependent on chance. At the beginning of each game round, you place a bet, and then the game randomly determines the prize amount.
To ensure fair play, we recommend playing exclusively in reputable casinos with a valid license. Even then, you should verify the gaming server’s address – it must match the official provider’s server.
Online slots feature a multitude of parameters. The most important ones are RTP, winning frequency, volatility, maximum multiplier, betting range, and the presence of jackpots.
Demo mode offers a special type of gameplay that lets you place bets with conditional money, which holds no real value. This mode is necessary for a free introduction to new slot machines.
In any modern reputable casino, you will find products from dozens of game manufacturers. If you have never played online slots before, we recommend checking out games from Pragmatic Play, Hacksaw Gaming, Relax Gaming, Nolimit City, and Push Gaming.
